Melexis Technologies NV MLX75030CLQ-AAA-000-RE

Overview

MLX75030CLQ-AAA-000-RE from Melexis is a universal active light sensor interface IC designed for dual-channel modulated IR reflection sensing and dual-channel logarithmic ambient light measurement. It integrates two independent ActiveLight channels (A/B) with hardware-level DC light cancellation, two ambient light channels (C/D), a 16-bit ADC, temperature sensor, SPI interface, and LED drivers - enabling robust proximity and gesture detection in high-ambient-light environments such as automotive cabins or sunlight-exposed displays.

For engineers reviewing the MLX75030CLQ-AAA-000-RE datasheet, pinout, applications, or equivalent options, this device supports simultaneous active/ambient sensing, programmable DC compensation across five segments, 45.7–109.4 kHz carrier frequency selection, and operation from −40°C to +105°C in QFN24 4×4 mm package with wettable flanks.

Technical Context

The MLX75030CLQ-AAA-000-RE implements two parallel analog signal chains: one for active IR reflection (channels A/B) using transimpedance amplifiers with integrated DC cancellation and demodulation, and another for ambient light (channels C/D) using logarithmic current-to-voltage conversion. Each ActiveLight channel supports up to 993 mA LED drive via external FETs and measures photocurrents from 0 to 275 µA with 16-bit resolution and ±5% linearity error.

Its SPI interface operates at up to 5 MHz with configurable command set (SM, RO, WR, RSTBY, etc.), while internal diagnostics include watchdog timer with 140 ms initial window, POR with 1.58–2.75 V threshold, and real-time error flags (Err2–Err6) for TIA saturation, regulator failure, ambient filter out-of-range, and LED driver mismatch - all accessible via dedicated status registers.

Key Specifications

Pinout & Package

MLX75030CLQ-AAA-000-RE is housed in a 24-pin QFN package (4 mm × 4 mm, 0.5 mm pitch) with wettable flanks (LW code), optimized for automated optical inspection and solder joint reliability in automotive applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar active ambient light sensing applications.

Compared with VEML6035 and TMD2755, the MLX75030CLQ-AAA-000-RE uniquely delivers concurrent active/ambient sensing with analog-level DC light suppression, programmable multi-segment compensation, and automotive-grade temperature range - making it the only option for robust HMI in high-dynamic-range lighting conditions.

Availability

MLX75030CLQ-AAA-000-RE is available at Aetrix Electronics and suitable for automotive human-machine interfaces, industrial proximity systems, and consumer gesture-control applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.

Supply support for MLX75030CLQ-AAA-000-RE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Melexis is a Belgian semiconductor company specializing in magnetic, infrared, and optical sensor solutions for automotive, industrial, and consumer markets.

The MLX75030 product line was developed specifically for next-generation optical HMI systems requiring simultaneous active reflection and ambient light measurement with high ambient immunity and diagnostic integrity.

FAQ

What is the operating temperature range supported by the MLX75030CLQ-AAA-000-RE?

The MLX75030CLQ-AAA-000-RE is rated for −40°C to +105°C operation and qualified to AEC-Q100 Grade 2 standards, making it suitable for under-hood and cabin-mounted automotive applications where thermal stability is critical. Its internal temperature sensor provides ±5°C accuracy across this full range and feeds calibration data to ambient light channels.

How does the MLX75030CLQ-AAA-000-RE achieve DC light cancellation in ActiveLight channels?

The MLX75030CLQ-AAA-000-RE implements hardware-level DC light cancellation using an integrated circuit that dynamically adjusts compensation based on measured ambient current across five programmable segments (Iamb_1 to Iamb_4). This analog suppression operates independently per channel A/B and rejects up to 900 µA of DC background light - including direct sunlight - without software intervention.

Can the MLX75030CLQ-AAA-000-RE drive IR LEDs directly, or does it require external components?

The MLX75030CLQ-AAA-000-RE does not drive IR LEDs directly; it provides gate-drive outputs (Drive LED A/B) for external N-channel FETs. These analog outputs control LED current up to 993 mA using an external shunt resistor (1–10 Ω), enabling precise pulse timing and thermal management. The IC includes DAC-controlled timing parameters like Tdc_pulse (47.5–420 µs) for optimal modulation.

What communication interface does the MLX75030CLQ-AAA-000-RE use, and what are its timing limits?

The MLX75030CLQ-AAA-000-RE uses a 4-wire SPI interface (SCLK, MOSI, MISO, \CS) with clock frequencies up to 5 MHz. Critical timing constraints include tcs_sclk ≥ 50 ns (CS low before first SCLK), tsclk_cs ≥ 50 ns (CS high after last SCLK), and tcs_dr ≤ 21.84 µs (max delay from CS high to DR assertion), ensuring deterministic register access and measurement synchronization.

Does the MLX75030CLQ-AAA-000-RE include built-in diagnostics, and how are errors reported?

Yes, the MLX75030CLQ-AAA-000-RE integrates comprehensive diagnostics including watchdog timer (Err2), voltage regulator monitoring (Err4), TIA saturation detection (Err6), ambient filter out-of-range (Err3), and LED driver mismatch (Err5). All errors are latched in the Err register and accessible via SPI read - enabling real-time system health monitoring without additional external circuitry.